CDMA Turn On Process

System Access:  When the mobile first turns on, it must find the best base station.  This is similar to analog where the phone scans all the control channels and selects…

CDMA Soft Handoff Completion

If it is available, the second cell site returns the Walsh Code that will be assigned for the soft handoff. At this point, the original base station orders the soft…

CDMA Soft Handoff Initiation

Once a call is established, the mobile is constantly searching for other possible cell sites that might be good candidate for soft handoffs. Most of the search time is limited…

CDMA Call Completion

After each access attempt, the mobile listens to the Paging Channel for a response from the base station. If the base station detects the access probe from the mobile, it…

How CDMA Call Initiation

The user then decides to make a call.  The number is keyed in and the send key is hit.  This initiates an Access Probe.  The mobile uses a special code…

CDMA Handoff Defination,Types and Capacity

Handoffs The TIA/EIA Interim Standard, Mobile Station – Base Station Compatibility Standard of Dual- Mode Wideband Spread Spectrum Cellular System (TIA/EIA/IS-95), states that a CDMA base station shall support three…

Radio Protocol Architecture in LTE

The EUTRAN radio protocol model specifies the protocols terminated between UE and eNB. The protocol stack follows the standard guidelines for radio protocol architectures (ITU-R M1035) and is thus quite…

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