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Signal Handoff Could Mean Roaming VoIP over WiFi

Posted by timothy on from the run-your-own-cloud dept.

wassup writes "According to this article in MIT tech review (and here), researchers at University of California San Diego have developed a technology called SyncScan that will reduce handoff delay in WiFi networks to a few milliseconds. VoIP roaming will be here soon!"

2 of 91 comments (clear)

  1. What about TCP/IP handoff? by hgilde · · Score: 5, Informative

    Last I checked, VOIP uses TCP sockets. When you move between WiFi base stations, you first must discover your new DHCP server, then get a new local IP address, then reconnect to the VOIP server.

    This will definitely be an annoying delay.

    1. Re:What about TCP/IP handoff? by c_g_hills · · Score: 5, Informative

      This is why IPv6 is a much better network (layer 3) protocol for VoIP as it supports mobility natively, allowing TCP and UDP sessions to be maintained when roamning from one network to the next.

      In fact, the Internet Society point out that IPv6 is necessary for mobile and wireless internet.