10-10.5 GHz频段内国际移动通信系统（移动蜂窝）与地球探测卫星业务（有源）的共享与兼容性研究
Sharing and Compatibility Studies between International Mobile Telecommunications Systems (Mobile Cellular) and Earth-Exploration Satellite Service (active) in 10-10.5 GHz
AI总结：
本研究围绕10-10.5 GHz频段IMT与EESS（有源）等现有业务的共存问题，梳理了WRC-23相关议题背景，介绍了CITEL会议上某主管部门提出的三项保护条件及相关共存研究内容。
摘要：
2023年在迪拜召开的世界无线电通信大会（WRC-23）深入讨论了多项与若干射频频段可能新增的国际移动通信（IMT）标识相关的大会议题。10-10.5 GHz频段便是其中一例，该频段主要分配给无线电定位业务、地球探测卫星业务。为确保对此类现有业务的持续保护，2020年至2023年间，ITU-R研究组开展了共享与兼容性研究并进行了深入辩论。本文呈现了一项共存研究。在美洲电信委员会（CITEL）第二常设咨询委员会：无线电通信第41次会议期间，某主管部门修改了其此前的美洲提案草案，纳入了对现有业务（例如EESS（有源））的额外保护措施。该主管部门还提出了三项条件，旨在确保对现有业务的保护，尤其是针对EESS（有源）和无线电定位业务。这些条件为：各主管部门应采取切实措施，确保部署在10-10.5 GHz频段的室外IMT基站（BS）发射天线正常情况下指向真地平线以下；此外，机械指向需处于地平线或地平线以下；各主管部门应采用旁瓣抑制技术，对于仰角高于30度的情况（0度对应地平线，90度对应天顶，以天线 boresight 处的最大增益为参考）提供29.5 dB的衰减；IMT基站发射的最大等效全向辐射功率（e.i.r.p.）不得超过32 dB W/100 MHz。
英文摘要：
The World Radiocommunications Conference 2023 (WRC-23), held in Dubai, intensively discussed several Agenda Items related to possible new International Mobile Telecommunications (IMT) identifications of several radio frequency bands. One example of a frequency band is 10-10.5 GHz, which has a primary allocation to Radiolocation, Earth-Exploration Satellite services. In order to ensure continued protection of such incumbent services, sharing and compatibility studies were conducted, and debated at length, at the ITU-R Study Groups from the year 2020 to 2023. This document presents a coexistence study. During the 41st Meeting of Permanent Consultative Committee II: Radiocommunications of the Inter American Telecommunication Commission (CITEL), one administration modified its previous Draft Inter-American Proposal, to include additional protection to the incumbent services (e.g., EESS (Active)). The same administration introduced three conditions meant to ensure protection of the incumbent services, in particular for the EESS (Active) and Radiolocation Service. Such conditions were: Administrations shall take practical measures to ensure the transmitting antennas of outdoor IMT base stations (BSs) are normally pointing below the true horizon when deployed within 10-10.5 GHz; additionally, the mechanical pointing needs to be at or below the horizon; Administrations shall use side lobe suppression techniques providing 29.5 dB of attenuation for elevation angles above 30 degrees where 0 degrees relates to the horizon and 90 degrees to the zenith, referenced to the maximum antenna gain at the boresight; The maximum equivalent isotropically radiated power (e.i.r.p.) emitted by an IMT base station shall not exceed 32 dB W/100 MHz.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
