ITU-R REPORT M.2168-1 PDF

Introduction

Studies within ITU-R have identified a number of AM(R)S applications for airport surfaces. These range from uploads of routing and electronic flight bag information, to scheduling de-icing facilities, and surface mapping to preclude runway incursion and aid in obstacle avoidance. In general those applications share the characteristics of short-range (a few kilometres maximum) and high bandwidth per airport. Limitation to ground transmission and the geographic separation of airports will likely facilitate airport-to-airport channel reuse.

To accommodate future growth in surface applications, the 5 000-5 010 MHz band has been selected for evaluation as potential additional spectrum for the airport surface local area network (LAN) currently being developed for operation in the 5 091-5 150 MHz band. The 5 000-5 010 MHz band currently has aeronautical radionavigation service (ARNS), aeronautical mobile-satellite (R) service (AMS(R)S, reference Radio Regulations No. 5.367), and radionavigation-satellite service (RNSS) Earth-to-space (E-s) allocations. Taking into account that a final determination on compatibility cannot be made until both the AM(R)S and RNSS systems are fully defined, this paper presents the results of initial considerations on compatibility between a proposed new AM(R)S system and RNSS (E-s) systems operating simultaneously in the 5 000-5 010 MHz band. In addition, considerations on compatibility of the proposed new AM(R)S system with the radio astronomy service (RAS) operating in the adjacent 4 990-5 000 MHz band are also examined.