Practical Voice Communications in Challenged Networks
نویسندگان
چکیده
Today’s Push-to-talk (PTT) services are infrastructure based and require stable end-to-end paths for successful communication. However, users with PTT enabled mobile devices may roam in challenged environments where infrastructure is not available. In such cases the traditional PTT services may exhibit poor performance or even fail completely. Delay-Tolerant Networking (DTN) is a research area which addresses the communication requirements specific to challenged networks. In this paper, we apply the DTN concept of asynchronous message forwarding to transmit voice messages. We present an implementation of the DT-Talkie for heterogeneous clients such as Maemo, Symbian and Android based personal handheld devices. We also demonstrate the use of a DTN throwbox with large storage capacity to improve message forwarding.
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