英语翻译5.BT research for Linux-based mobile devices5.1 Previous

英语翻译5.BT research for Linux-based mobile devices5.1 Previous CTAA research activityThe convergent terminals and applications (CTAA) researchtheme,within BT’s Research and Venturing organisation,investigates emerging trends in the entire device ecosystem— including components,hardware and software issues forfuture mobile devices,as enablers for future serviceofferings.Previous activities within the CTAA research themehave involved the development of proof of concept (PoC)demonstrators for innovative service concepts using mobiledevices running Symbian or Windows OSs.Application/service development on mobile devices requires access tosoftware development kits (SDKs) which are usuallyobtained by subscribing to appropriate developer programs,e.g.Symbian Developer Program,Microsoft DeveloperNetwork,etc,related to the device OS.5.2 Enablers for Linux-based mobile deviceresearchNew challenges are presented when pursuing similarresearch activities for Linux-based mobile devices.There isno such thing as a single standard Linux OS (let alone one formobile devices),only a large number of different Linuxdistributions.Many ODM/OEMs appear to have chosencommercially available embedded Linux distributions fortheir mobile handset products.Some ODMs/OEMs haveused their own Linux distributions developed in-house.Anumber of different commercially available applicationframework SDKs can be chosen in conjunction with anumber of different (embedded) Linux distributions,leadingto a confusingly rich set of possible configurations.Such research activity naturally requires the availabilityof a number of mobile phone devices (or failing that adeveloper’s reference design implementation) running anembedded Linux distribution.To investigate FMC servicescenarios dual-mode (GSM and Wi-Fi equipped) mobiledevices are a must.The mobile device OS needs to havesome basic initial capabilities,for example to be able tomake GSM phone calls,have driver support for a Wi-Fiinterface and support a basic set of applications.Additionally the mobile device needs to be ‘open’ ratherthan ‘locked-down’,so that new applications can beprogrammed and loaded on to the device.This may requirespecial co-operation from a device manufacturer or mobilephone chipset manufacturer.An off-the-shelf,Linux-based,mobile device is likely to be locked down for reasons ofdevice stability or even legality.Software requirementsinclude an SDK from the mobile device manufacturer whichincludes cross-compilation tools,debuggers,etc,plus ameans to load new applications on to the device.Furthermore,the SDK should include reusable componentlibraries which support application development,e.g.GUI,multimedia capabilities,SIP stack,codecs.