Appendix 10.Guidelines on the Internet to be obtained from CNS after ANC reviewA10-1

2.2System Architecture

2.2.1Ground Architecture

2.2.1.1Frequency range for AeroMACS

AeroMACS radio communication entities use 2 types of bands whichare limited to use with surface applications at airports.

-Primary band : 5091 – 5150 MHz (International table of frequency allocations)

-Secondary band : 5000 – 5090 MHz (National allocations)

All bands are separated 5MHz bandwidth, and each bandwidth can be allocated to start in a unit of 250kHz.

Primary band can be used 11 channels for the maximum. In this case, the center frequencies are allocated for 5095, 5100, 5105, ..., 5145.

Figure 1: AeroMACS Channels

2.2.1.2Coverage of the AeroMACS communication

AeroMACS based on Mobile WiMAX Release 1, and covers airport surface communications such as ATC, AOC and other necessary radio communications.

Figure 2: Coverage of the AeroMACS communication

Each airport is operated the radio communication system which is deployed independently, and airport has a system of their authentication for inter moving aircrafts. However, the system is different by deployment of the AeroMACS.

2.2.1.3Network overview of the AeroMACS

AeroMACS communication network is divided to ASN and CSN mainly.

ASN is composed of SS, BS, ASN-GW etc. And CSN is made of AAA, HA, DHCP-Server etc.

Deploying multi authentication server, it is possible to restrict the number of the access SS foreach service at the airport.

By constructing a network for connecting the servers which are deployed each airport, it is possible to authentication of the SS despite SSs beyond region of the service or airport.However, how to communicate with each server and to exchange the keyare out of scope in this document.

Internal airport network model is below,

Figure 3: Overall Network Reference Model

Figure 4: Detailed AeroMACS ASN and CSN Reference Model

2.2.1.4AeroMACS applications and SS use cases

AeroMACS can potentially support the wide variety services of voice, video, and data communications and information exchanges among fixed and mobile users at the airport.

The services and applications provided by AeroMACS can be grouped into three major categories: aviation authority operations, airport and/or port authority operations, and airline carrier operations (see Figure 5). Within these broad categories, the data communications services and applications can be described as either fixed or mobile, based on the mobility of the end user.

Figure 5: Examples of AeroMACS Applications

It is important to provide the services that arerelated by setup point of SS.

-On the aircrafts: it sets up in the aircraft for communication with the ground system

-On the ground entities:

Fixed: it sets up at control tower or working place such as control entities and surveillance cameras

Nomadic: it sets up on construction vehicles and other operation vehicles.

Mobile: the workers in the airport use AeroMACS mobile terminals

Figure 6: SS use cases