ITU-R REPORT M.2146

Abstract

<strong>Introduction and scope</strong> <br>The 2 500-2 690 MHz band has been identified as a frequency band that administrations may choose to make available for IMT-2000. Consequently, ITU-R has undertaken sharing studies in the 2 500 MHz to 2 690 MHz band between IMT-2000 systems and other services as required by Resolution 223 (WRC-07). Report ITU-R M.2030 &#8211; Coexistence between IMT-2000 time division duplex and frequency division duplex terrestrial radio interface technologies around 2 600 MHz operating in adjacent bands and in the same geographical area, focused on coexistence analysis for sharing between TDD-based and FDD-based IMT-2000 systems, specifically CDMA-DS and CDMA-TDD, operating in adjacent bands. Report ITU-R M.2045 &#8211; Mitigating techniques to address coexistence between IMT-2000 time division duplex and frequency division duplex radio interface technologies within the frequency range 2 500-2 690 MHz operating in adjacent bands and in the same geographical area, addressed mitigation techniques to enable harmonious coexistence of these technologies. Report ITU-R M.2113 &#8211;Sharing studies in the 2 500-2 690 MHz band between IMT-2000 and fixed broadband wireless access systems including nomadic applications in the same geographical area, addressed both coexistence analysis and mitigation of sharing between IMT-2000, specifically CDMA-DS and CDMA-TDD and broadband wireless access systems that support fixed and/or nomadic applications. <br>With the incorporation of OFDMA-TDD-WMAN as the 6th IMT-2000 radio interface, a study of coexistence between OFDMA-TDD-WMAN and other components of IMT-2000 is appropriate to extend the analysis provided in Report ITU-R M.2030. This Report addresses coexistence between the OFDMA-TDD-WMAN and CDMA-DS components of IMT-2000.