Матеріали про LTE Voice and SMS Issues

I have blogged about Semi-Persistent Scheduling (SPS) and Transmit Time Interval (TTI) Bundling feature before. They are both very important for VoIP and VoLTE to reduce the signalling overhead. It should be noted that as per RRC Specs, SPS and TTI Bundling is mutually exclusive.

The Voice Evolution View more presentations from Zahid Ghadialy Источник: http://feedproxy.google.com/~r/3gAnd4gWirelessBlog/~3/rvD3hYUOBDk/voice-evolution-volte-vohspa-wcdma-and.html.

Источник: http://feedproxy.google.com/~r/3gAnd4gWirelessBlog/~3/k6_kmnWyytM/operator-services-roadmap.html.

The following is from E\\\ whitepaper available here: In 2010, 6.9 trillion text messages were sent globally and this figure is expected to break the eight trillion mark in 2011. This represents USD 127 billion in revenue for operators.

While in the initial testing CSFB timing used to be between 6-8 seconds, most Rel-8 phones can complete the CSFB procedure between 4-4.5 seconds. Unfortunately this is still a lot in terms of signalling.