Rants, Raves, Reviews


Guidelines for CDMA Application Development

By Gary R, in , posted: 7-Mar-2006 07:45

This is my first blog ever, anywhere. I thought I would start off slowly and hopefully gain some momentum over the next few week. In this first installment I will cover the basics. These are generally the first questions asked when developing for the Telecom CDMA network. 1. Dormancy Dormancy is a function of CDMA to reduce the loading on the radio network. After (currently) 1 minute (1xRTT) or 10 seconds (EVDO) of no data activity the network drops the radio link but maintains the PPP layer. Sending a packet to or from the mobile device IP brings the radio link back up. This is an efficient use of radio resource but it does add an overhead to reactivation of about 3 seconds (1xRTT) or 500ms (EVDO). You can override the network dormancy and reduce the timer to 10 seconds (1xRTT) by inserting at+cta=10 into the mobile device. The at+cta command accepts input from 0~255 - 0 or anything above 60 is ignored so network wins. You can query the dormancy timer via HyperTerm using at+cta?

Other related posts:
Finally - Mobile Convergence Sanity
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Gary R
Wellington
New Zealand


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