6 Requirements of multi-access and seamless mobility

22.1193GPPMaritime communication services over 3GPP systemRelease 17TS

6.1 Seamless mobility

6.1.1 Description

Network deployment scenarios are to be taken into account for maritime communication and these may differ from terrestrial communication in order to provide seamless mobile services within a vessel at sea or on inland waterways. The usage of moving networks, isolated networks or satellite access networks may be more commonly applicable for maritime safety services compared with general commercial services over 3GPP networks because fixed mobile network deployments are used for most terrestrial mobile services.

The communication range may depend on a number of factors such as the power level transmitted, the height of the antenna, the type of vessel, the particular service scenario and propagation conditions. Thus, it may not be easy to provide a single value for the communication range between two vessels, and for a vessel that is applicable for all maritime service scenarios.

6.1.2 Requirements

The minimum communication range between vessels shall be equal to the maximum line-of-sight range between antennas mounted on two vessels at sea or on inland waterways.

NOTE: The communication range between vessels is measured in nautical miles (NMs) and 1 NM equals 1852 metres.

EXAMPLE: In the case of non-SOLAS vessels with antenna heights 4 metres above sea level, the minimum communication range is 10 NMs when applying the formula defined in IMO Resolution A.801(19).