FOREWORDINTRODUCTIONScopeNormative referencesTerms and definitionsAbbreviated termsInteroperability in UWASNOverviewInteroperability definitionAchieving interoperabilityThe need for interoperabilityUWASN interoperabilityInteroperability between the user and the UWA-GWInteroperability between the UWA-GW and the UWA-FNInteroperability between UWA-FNsInteroperability between UWA-GWsUWASN communication technology interoperability architecture point of viewUWASN communication technology interoperability architecture from service point of viewGeneralExample: Interoperability between heterogeneous networksBibliography