Wireless networks have limited bandwidth and increased latency for data transmission, impeding the efficient operation of wireless video distribution. Vehicles with increased situational awareness requirements have numerous external digital video feeds with high resolution and framerates, with both compressed and uncompressed protocols. Accessing these feed via a wireless device becomes an issue due to the wireless network limitations.
The programme investigated and evaluated the use of wireless technologies for digital video distribution to increase the situational awareness of a vehicle by improving the delivery and availability of video data for external surroundings.
An initial feasibility study looked into then current and upcoming wireless technologies and their capabilities to identify possible options for the development of a laboratory test-bed, for their evaluation. A portable test-bed was built based on a number of wireless communication interfaces such as WiFi and Ultra Wide Band, along with a custom network performance measurement and analysis tool. The tool was designed to emulate the data generation and transmission profiles of various video distribution formats and protocols.
A number of tests and measurements were conducted on the testbed with various network configurations and traffic profiles, evaluating the practical video distribution performance of the wireless networks.