1、 Recommendation ITU-R M.2067-0 (02/2015) Technical characteristics and protection criteria for Wireless Avionics Intra-Communication systems M Series Mobile, radiodetermination, amateur and related satellite services ii Rec. ITU-R M.2067-0 Foreword The role of the Radiocommunication Sector is to ens
2、ure the rational, equitable, efficient and economical use of the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions of
3、 the Radiocommunication Sector are performed by World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-R/ISO/IEC referenced i
4、n Annex 1 of Resolution ITU-R 1. Forms to be used for the submission of patent statements and licensing declarations by patent holders are available from http:/www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/ISO/IEC and the ITU-R pa
5、tent information database can also be found. Series of ITU-R Recommendations (Also available online at http:/www.itu.int/publ/R-REC/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service (
6、television) F Fixed service M Mobile, radiodetermination, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fixed-satellite and fixe
7、d service systems SM Spectrum management SNG Satellite news gathering TF Time signals and frequency standards emissions V Vocabulary and related subjects Note: This ITU-R Recommendation was approved in English under the procedure detailed in Resolution ITU-R 1. Electronic Publication Geneva, 2015 IT
8、U 2015 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R M.2067-0 1 RECOMMENDATION ITU-R M.2067-0 Technical characteristics and protection criteria for Wireless Avionics Intra-Communication systems (2014) Scope
9、This Recommendation provides the technical and operational characteristics of, and protection criteria for wireless avionics intra-communication (WAIC) systems. These characteristics are intended for use when assessing the compatibility of WAIC systems with other services. Keywords Aeronautical, avi
10、onics, aircraft, protection criteria Abbreviations/Glossary SARPs: Standards and recommended practices WAIC: Wireless avionics intra-communication; radiocommunication between two or more aircraft stations located on a single aircraft; supporting the safe operation of the aircraft. Related ITU Recomm
11、endations, Reports Report ITU-R M.2283 The ITU Radiocommunication Assembly, considering a) that the future generation of aircraft is being designed to enhance efficiency, reliability and safety, as well as to be more environmentally friendly; b) that wireless avionics intra-communication (WAIC) syst
12、ems provide radiocommunication between two or more points integrated into or installed on a single aircraft; c) that WAIC systems do not provide radiocommunication between an aircraft and the ground, another aircraft or a satellite; d) that WAIC systems must operate in a manner to ensure the safe op
13、eration of an aircraft; e) that WAIC systems operate during all phases of flight, including on the ground; f) that aircraft equipped with WAIC systems operate worldwide and cross national borders; g) that WAIC signals will be attenuated by the aircraft fuselage, recognizing a) that the International
14、 Civil Aviation Organization develops standards and recommended practices for civil aviation; b) that Annex 10 to the Convention on International Civil Aviation contains standards and recommended practices for aeronautical radionavigation and radiocommunication systems used by civil aviation, noting
15、 that WAIC is defined as radiocommunication between two or more aircraft stations located on a single aircraft; supporting the safe operation of the aircraft, 2 Rec. ITU-R M.2067-0 recommends that the technical and operational characteristics and protection criteria for WAIC systems as described in
16、the Annex should be used for sharing and compatibility studies. Annex Technical characteristics and protection criteria for wireless avionics intra-communication systems 1 Wireless avionics intra-communication systems Wireless Avionics Intra-Communication (WAIC) systems offer aircraft designers and
17、operators opportunities to improve flight safety and operational efficiency while reducing costs and enhancing efficiency and reliability. WAIC systems utilize radiocommunication between two or more stations on a single aircraft; consisting of on-board networks supporting the aircrafts safe operatio
18、n. WAIC transmissions may not be limited to the interior of the aircraft structure, and will not provide communications between an aircraft and the ground, another aircraft or satellite. WAIC systems support data and voice communications limited to the safe, reliable and efficient operation of an ai
19、rcraft. Safety-related video surveillance applications may also include communications systems used by the crew for the safe operation of the aircraft. They are not intended to provide communications with consumer devices brought onboard the aircraft by passengers or for in-flight entertainment appl
20、ications. Rather, they are assumed to be part of the aircrafts exclusive network. 2 Wireless avionics intra-communication systems categorization In discussing the requirements and performance of WAIC systems, it is useful to categorize these systems according to two characteristics: data rate (high
21、and low) and installation location of the WAIC systems transmit antennas (inside and outside the fuselage). Rec. ITU-R M.2067-0 3 FIGURE 1 Wireless avionics intra-communication system categorization M 20 - 0 1. 67W A IC s y s t em ca t eg o ri s at i o nL o ca t i o n D at a rat eI (i n s i d e)O (o
22、 u t s i d e)L (l o w )H (h i g h )2.1 Categorization process description 2.1.1 System data rate categorization WAIC applications can be categorized into two broad categories corresponding to application data rate requirements. The following definitions are used for this purpose: low (L) data rate a
23、pplications have data rates less than 10 kbit/s, and high (H) data rate applications have data rates above 10 kbit/s. These categorizations are signified by “L” and “H”, respectively. Low and high data rate WAIC systems have different technical characteristics (see 3). 2.1.2 System location categori
24、zation The installation location of a WAIC transmitter has an impact on the amount of RF energy radiated from the aircraft. Therefore, WAIC systems that are enclosed by the airplane structure, such as the fuselage or wing are categorized as inside (I). Those applications that are not enclosed are ca
25、tegorized as outside (O). 2.1.3 System categories WAIC applications can be characterized by XY following the previous definitions. The parameter X represents the data rate (H, L), and the parameter Y represents the location (I, O). For example, a typical category is LI, representing an application w
26、ith low data rate requirements, and located internal to the aircraft structure. 3 Wireless avionics intra-communication system characteristics Table 1 summarizes the typical technical characteristics of WAIC systems. In general, two types of systems are envisaged which are tailored to the requiremen
27、ts of (a) low data rate and often energy limited WAIC applications such as autonomous sensors and (b) high data rate applications with less restrictions regarding energy consumption. These system types are referred to as low data rate (L) and high data rate (H) systems, respectively. 4 Rec. ITU-R M.
28、2067-0 TABLE 1 Technical characteristics for low and high data rate wireless avionics intra-communications systems Low data rate system High data rate system Units Transmitter Number and location of simultaneously active transmitters per channel 1 1 Transmitter antenna gain 0 0 dBi Max. transmission
29、 power2 10 50 mW 3 dB emission bandwidth 2.6 16.6 MHz 20 dB emission bandwidth 6 22 MHz 40 dB emission bandwidth 12 60 MHz Receiver Receiver antenna gain1 0 0 dBi Receiver IF-bandwidth 2.6 20 MHz Receiver noise figure 10 10 dB Required signal-to-noise ratio 9 14 dB Receiver sensitivity 91 77 dBm Pro
30、tection criterion (I/S) 9 14 dB Min. out of band interference rejection 10 10 dB Front end overload protection level3 30 30 dBm Maximum distance between outside WAIC transmitter and receiver2 15 15 metre 1 Directive antennas with gains larger than 0 dBi in the mainbeam direction and consequential ne
31、gative gains outside the main beam may be applied. In these cases, the antenna main beams are pointed towards the center of the aircraft. This will enable the reduction of the overall emissions of the aircraft. 2 These values are technical upper limits. Lower values are generally possible at the cost of cell size and increased number of required cells to appropriately cover the aircraft. 3 Incident interference power must be below 30 dBm across the entire allocated frequency range to maintain sufficient linearity of operation
