Mobile broadband: EVDO service

EVDO overview

EVDO is one of mobile broadband service which giving high speed internet accesss to mobile telecommunication subscribers. Evolution Data Optimize/Only (EVDO) is the next data service platform of CDMA 1x. EVDO service will guarantee single user receiving download speed up to 3,072 Mbps compared to CDMA 1x which maximum can reach 164 kbps. By launched EVDO service telecommunication companies need to expand the capacity of network element such as Base Controller (BSC), Base Transmission Station (BTS) and definitely international Bandwidth internet

Pre-launch EVDO service

EVDO Rev A has max physical layer throughput 3,072 Mbps unfortunately it is very difficult while testing EVDO Rev through throughput testing tool such as NEMO and QXDM which can test on the application layer, will have throughput less than 3,072 Mbps e.g. 2,99 Mbps etc

Telecommunication companies need to test the throughput on several cell sites before they launch EVDO service. They can do this by doing access to internet directly and get the throughput while downloading huge file and doing FTP to get and put huge file on local network

Poor throughput and handoff

Two things which should be anticipated by telecommunication companies before they launch EVDO service is eliminate the cell sites (BTS) which have poor throughput and hand off process either from one BTS to another one or from EVDO network to CDMA 1x. Poor throughput could come anytime on EVDO service and caused by many things. Usually poor throughput on BTS is caused by RF capacity or high utilization on the BTS. Telecommunication companies should prepare to add more BTS capacity or redirect the close BTS to the BTS which has poor throughput. Meanwhile handoff process is very critical case to make sure that all sessions will have smooth process while mobile telecommunication subscriber move from one BTS to another one or from EVDO network to CDMA1x

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